DNA Structure and Function Quiz

The primary function of DNA is to

• make lipids.

• store and transmit genetic information.

• control chemical processes within cells.

• prevent mutations.

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The scientists who established the structure of DNA are

• Avery and Chargaff

• Mendel and Griffith

• Hershey and Chase

• Watson and Crick

How much Thymine should you expect to find in a sample of DNA if you have 28% adenine in the same DNA sample?

• 22%

• 24%

• 28%

• 44%

Three terms are represented in the diagram, what is the relationship between these three terms?

• DNA is made up of proteins that are synthesized in the cell.

• DNA controls the production of protein in the cell.

• Protein is composed of DNA that is stored in the cell.

• The cell is composed only of DNA and protein.

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Which of the following types of RNA carries instructions for making proteins to the ribosomes?

• mRNA

• tRNA

• rRNA

• all of the above

When constructing RNA molecules from DNA, what base will be placed in the RNA sequence when the DNA contains adenine?

• Cytosine

• Thymine

• Guanine

• Uracil

What is a sequence of 3 nucleotides on an mRNA molecule that code for an amino acid called?

• Trifecta

• Triphosphate

• Codon

• Anticodon

Lamarck tried to explain change in organisms over time by

• natural selection

• acquired traits

• mutations

• spontaneous generation

Which was Charles Darwin’s most important contribution to the concept of evolutionary change?

• His theory of natural selection

• His theory that people came from apes

• His theory that there is no God

• His theory that Lamarck was wrong

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When a dairy farmer chooses to breed the cows that give the most milk in the herd, the farmers are following the principle of

• acquired characteristics

• descent with modification

• artificial selection

• natural selection